Flue-cap.



No. 736,537. PATBNTED AUG. 18, 1903.

J. MOINTYRB.

FLUE GAP.

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FLUE-CAP.

SPECIFICATION formnglpart of Letters Patent No. 736,537, dated August 18, 1903.

Application filed September 20, 1902. Serial No. 124,229. (No modelh To @ZZ whom, t Nur/y con/cern:

Beit known that I, JOHN MCINTYRE, a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented a new and useful Fine-Cap, of which the following is a specication.

This invention relates generally to flue caps or Stoppers; and the object of the invention is to provide a cap or stopper which can be quickly and easily fitted int-o fines or thimbles of various diameters and edectively close the same.

Another object of the invention is to provide both a re and dust proof stopper, so that soot, dust, and dirt will not escape into the room; and with these various objects in view the invention consists in the novel features of construction, combination, and arrangement, all of which will be fully described hereinafter and pointed out in the claims.

In the drawings forming part of this speci- 4iication, Figure 1 is a perspective view, partly in section, showing the practical application of my invention. Fig. 2 is aface view before the binding-arms have been spread. Fig. 3 is a face view after the binding-arms have been spread for the purpose of locking the stopper in the flue or thimble. Fig. 4 is a sectional View of the device complete.

In carrying out my invention I employ a circular plate or disk A, upon the inner face of which is arranged a piece of asbestos or similar material B, the edges of said asbestos being folded around the edges of the plate A, as most clearly shown at B', said folded edge contacting with the interior of the flue or thimble O. A bolt D is passed centrally through the plate A and carries a collar D', and secured to the outer end of the'bolt and resting upon the collar is a circular plate E, to which are connected the binding-arms F, said arms being pivotally connected at their inner ends to the said plate E, adjacent toits outer edge. The outer or free ends of these binding-arms F work through the guide-eyes G of the eyebolts which are connected to the plate A, as most clearly shown in Fig. 4, and by turning the plate E after the stopper has been inserted in the flue the arms will be spread so as to bind against the interior of the due or thimble, and thereby securely hold the stopper in the said line, and in order to lock the plate after it has been adjusted I employ a nut I'I, which is secured upon the outer end of the bolt D and securely binds the plate E against the collar D.

I indicates the outer plate, which may be ornamental and constructed of metal or any other suitable material. This plate is usually of such diameter as to extend entirely across the iiue or thimble opening and is held in place by means of a screw l', which passes centrally through the plate I and engages the nut H. This plate I is only arranged after the stopper has been adjusted and secured within the flue. The asbestos covering Will prevent fire, and, furthermore, as the said covering tightly iits the interior of the ilue or thimble it is obvious that all dust and soot will be prevented escaping into the room. By means of the adjustable plate, binding-l arms, and locking-nut the stopper can be securely fastened in the flue or thimble and all danger of its dislocation by sudden gusts of wind avoided. Furthermore, a stopper as herein shown and described can be made to lit various sizes of flues or thimbles within certain limits, as it frequently happens that these fines vary somewhat iin their interior diameters.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A fine-stopper comprising a stationary disk, guide-eyes carried by said disk, a rotatable disk mounted adjacent the stationary disk, arms pivoted to said disk and Working in the guide-eyes, and means for locking the rotatable disk into position.

2. Aliuc-stoppercomprisingacircularplate or disk, a cover of non-combustible material overlapping the edges of the plate or disk, the central bolt, the adjustable plate arranged thereon, eyebolts and the binding-arms Working through the eyebolts and pivotally connected to the adj Listing-plate, and means for locking said adj Listing-plate, as specified.

3. Allue-stoppercomprsingaciroular plate ing' through the eyebolts, the locking-nuts, or disk, a covering of non-combustible matethe outer plate and the screw passing through rial overlapping the edges of said plate or disk, said plate into the looking-nut, as specified. 1o

the central bolt, the eyebolts, the-collar sur JOHN MCINTYRE. rounding the central bolt, the plate arranged Witnesses: upon the said central bolt, the binding-arms FLORA KELLEY,

pivotally connected to said plate and Work- LEE E. COLE. 

